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TPS51916RUKT датащи(PDF) 7 Page - Texas Instruments

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номер детали TPS51916RUKT
подробное описание детали  Complete DDR2, DDR3 and DDR3L Memory Power Solution Synchronous Buck Controller, 2-A LDO, Buffered Reference
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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TPS51916RUKT датащи(HTML) 7 Page - Texas Instruments

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TPS51916
Thermal Pad
VTTSNS
VLDOIN
VTT
VTTGND
VTTREF
DRVL
V5IN
SW
DRVH
VBST
TPS51916
www.ti.com
SLUSAE1B
– DECEMBER 2010 – REVISED AUGUST 2011
DEVICE INFORMATION
RUK PACKAGE (TOP VIEW)
PIN FUNCTIONS
PIN
I/O
DESCRIPTION
NAME
NO.
DRVH
14
O
High-side MOSFET gate driver output.
DRVL
11
O
Low-side MOSFET gate driver output.
GND
7
Signal ground.
MODE
19
I
Connect resistor to GND to configure switching frequency, control mode and discharge mode. (See Table 2)
PGND
10
Gate driver power ground. RDS(on) current sensing input(+).
PGOOD
20
O
Powergood signal open drain output. PGOOD goes high when VDDQ output voltage is within the target range.
Reference input for VDDQ. Connect to the midpoint of a resistor divider from VREF to GND. Add a capacitor for
REFIN
8
I
stable operation.
SW
13
I/O
High-side MOSFET gate driver return. RDS(on) current sensing input(–).
S3
17
I
S3 signal input. (See Table 1)
S5
16
I
S5 signal input. (See Table 1)
TRIP
18
I
Connect resistor to GND to set OCL at VTRIP/8. Output 10-μA current at room temperature, TC = 4700 ppm/°C.
VBST
15
I
High-side MOSFET gate driver bootstrap voltage input. Connect a capacitor from the VBST pin to the SW pin.
VDDQSNS
9
I
VDDQ output voltage feedback. Reference input for VTTREF. Also serves as power supply for VTTREF.
VLDOIN
2
I
Power supply input for VTT LDO. Connect VDDQ in typical application.
VREF
6
O
1.8-V reference output.
VTT
3
O
VTT 2-A LDO output. Need to connect 10
μF or larger capacitance for stability.
VTTGND
4
Power ground for VTT LDO.
VTTREF
5
O
Buffered VTT reference output. Need to connect 0.22
μF or larger capacitance for stability.
VTTSNS
1
I
VTT output voltage feedback.
V5IN
12
I
5-V power supply input for internal circuits and MOSFET gate drivers.
Thermal
Thermal pad. Connect directly to system GND plane with multiple vias.
pad
Copyright
© 2010–2011, Texas Instruments Incorporated
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